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Finding the Fourth Proportional to 124,393.17, 171,526.91 and 84,036.86

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Solution

The fourth proportional to 124,393.17, 171,526.91 and 84,036.86 is: 115,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,393.17 : 171,526.91 = 84,036.86 : x
  2. Step 2: Convert to fraction form
    124,393.17/171,526.91 = 84,036.86/x
  3. Step 3: Cross multiply
    124,393.17x = 171,526.91 × 84,036.86
  4. Step 4: Simplify right side
    124,393.17x = 14,414,582,921.90
  5. Step 5: Solve for x
    x = 14,414,582,921.90/124,393.17
  6. Step 6: Final answer
    x = 115,879.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.